When calling unregister_node(), the function shows following message at
device_release().
Device 'node2' does not have a release() function, it is broken and must be fixed.
So the patch implements node_device_release()
CC: Len Brown <len.brown@xxxxxxxxx>
CC: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
CC: Paul Mackerras <paulus@xxxxxxxxx>
CC: Christoph Lameter <cl@xxxxxxxxx>
Cc: Minchan Kim <minchan.kim@xxxxxxxxx>
CC: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
CC: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
CC: Wen Congyang <wency@xxxxxxxxxxxxxx>
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@xxxxxxxxxxxxxx>
Index: linux-3.5-rc1/drivers/base/node.c
===================================================================
--- linux-3.5-rc1.orig/drivers/base/node.c 2012-06-14 09:09:53.000000000 +0900
+++ linux-3.5-rc1/drivers/base/node.c 2012-06-25 18:40:45.810261969 +0900
@@ -252,6 +252,12 @@ static inline void hugetlb_register_node
static inline void hugetlb_unregister_node(struct node *node) {}
#endif
+static void node_device_release(struct device *dev)
+{
+ struct node *node_dev = to_node(dev);
+
+ memset(node_dev, 0, sizeof(struct node));
+}
/*
* register_node - Setup a sysfs device for a node.
@@ -265,6 +271,7 @@ int register_node(struct node *node, int
node->dev.id = num;
node->dev.bus = &node_subsys;
+ node->dev.release = node_device_release;
error = device_register(&node->dev);
if (!error){
--
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